A common food intolerance appears to be directly tied to children's risk of type 1 diabetes, according to one study. Published in the journal Diabetes Care, the study by Swedish researchers focuses on the diabetes risk associated with celiac disease. This intolerance to the wheat protein gluten is among the most widespread food allergies. Researchers studied 40 years worth of health background data from more than 9,000 patients. At the end of the study period, researchers concluded that children born with celiac disease were about three times more likely to develop type 1 diabetes by their 20th birthday. Patients with newly-diagnosed celiac disease are urged to consult their doctor if they experience symptoms including fatigue, increased thirst or frequent urination.